<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>error page</title>
</head>
<body>
<h1 style="color: red;">test</h1>
<h1>error page</h1>
<h3>room 404 : file not found</h3>
<a href="/">to home page</a>
</body>
</html>